Although Michelle says she has a problem with having an affair, she doesn't plan on ending the extra-marital affair. She says she even hopes to marry him one day. "People say, 'Well, he's cheated on his wife. He'll cheat on you,'" she says. "It could happen…I would take that chance on him in a heartbeat."

Dr. Michelle Callahan, a psychologist and relationship expert, says Michelle needs to look within herself to figure out why she's involved with a married man. "You really need to put yourself in touch with what's happened in your past, what you were told about yourself, or what you think about yourself today that would allow you to put yourself in this secondary position," she says.

Michelle says she's happy with her situation, but Dr. Callahan says these "toxic relationships" can damage a woman's self-worth. "It makes you less powerful," she says. "You have the power to change it. You made the choice to get into it, and you can make the choice to get out."